How to Grow Coral Bean
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Coral Bean
Erythrina herbacea
shrubCoral Bean is a native North American shrub known for its striking bright red-orange tubular flowers that attract hummingbirds and butterflies. It produces attractive coral-red seed pods followed by shiny red beans, creating visual interest from spring through fall. This deciduous to semi-evergreen shrub is valued for its ornamental appeal and ecological importance as a pollinator plant.
When should you plant Coral Bean in your zone?
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Example Coral Bean timeline · Pittsburgh, PA (Zone 6b)
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Plant Coral Bean
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Coral Bean
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Coral Bean dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in USDA zones 8-10, with hardier forms surviving into zone 7b
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Get my Coral Bean timeline →Growth Stages
Establishment
First yearYoung shrub developing root system and initial growth, with minimal flowering.
Keep soil consistently moist but not waterlogged. Provide shelter from harsh winds. Stake if needed for stability.
Vegetative Growth
Year 1-2Shrub produces leaves and woody stems, gradually filling out its form.
Prune in late winter to encourage bushiness. Fertilize monthly during growing season with balanced or higher phosphorus fertilizer.
Flowering
3-4 months (spring to early summer)Spectacular bright red-orange tubular flowers appear in clusters at branch tips, attracting hummingbirds.
Flowers appear from April to June in most zones. Deadhead spent flowers to encourage continued blooming. Provide consistent moisture.
Seed Pod Development
2-3 months (summer to fall)After flowers fade, elongated coral-red seed pods develop with attractive wrinkled texture.
Allow pods to mature on plant if seeds are desired for propagation. Leave pods for wildlife benefit.
Dormancy
3-4 months (fall to spring)In cooler zones, plant loses leaves and enters winter dormancy; may die back to roots.
Reduce watering significantly. Mulch heavily around base (4-6 inches) to protect roots in zones 8-9. No fertilizer needed.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with water to dislodge; use insecticidal soap if severe. Improve air circulation.
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Monitor with yellow sticky traps. Use neem oil or insecticidal soap on affected foliage.
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Hand-pick early in morning if population is small. Use row covers on young plants or insecticidal soap if needed.
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Spray with horticultural oil in dormant season or use insecticidal soap during growing season.
Uses
Hummingbird & Pollinator Magnet
WildlifeThe bright red-orange flowers are irresistible to hummingbirds and attract butterflies, bees, and other pollinators. This makes Coral Bean an excellent choice for wildlife gardens and supporting native pollinator populations. [source]
Garden Focal Point
OrnamentalThe showy spring flowers and attractive coral-red seed pods provide season-long visual interest. The shrub's relatively open, airy form works well in cottage gardens, native plant gardens, and xeriscape designs. [source]
Traditional Ethnobotanical Use
MedicinalHistorically, Coral Bean was used in traditional medicine by Native Americans and in folk remedies, though modern use is limited due to toxicity concerns. Seeds contain erythrine alkaloids with pharmacological properties studied in research. [source]
Seed Crafts & Decorations
CraftThe distinctive shiny red seeds are used in Native American jewelry, arts, and crafts projects. They are sometimes used in dried arrangements and decorative pieces (note: seeds should be handled with care due to toxicity). [source]
Native Plant Restoration
EcologicalAs a native shrub to the southeastern United States, Coral Bean plays an important ecological role in supporting local wildlife and can be used in habitat restoration and native plant landscaping projects. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest seed pods in fall when they turn brown and dry; split open to collect shiny red seeds. Wear gloves as all parts of the plant contain toxic alkaloids. Seeds can be stored in cool, dry place for next year's planting. Do not harvest for consumption.
Fun Facts
- 🌱 Coral Bean seeds contain erythrine alkaloids and are toxic to humans; they were historically used by some cultures as fishing poisons and insecticides, but should never be ingested.
- 🌱 The shrub is also called 'Coralbean' and was named for both its coral-red flowers and the beautiful red seeds that resemble coral beads—Native Americans used the seeds as decorative beads in jewelry and clothing.
- 🌱 Hummingbirds are so attracted to Coral Bean flowers that the plant is sometimes called a 'hummingbird magnet,' and it naturally attracts multiple species during migration periods in spring and fall.
Gardening Terms
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